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Finding the Fourth Proportional to 18,776.92, 25,914.60 and 10,819.48

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Solution

The fourth proportional to 18,776.92, 25,914.60 and 10,819.48 is: 14,932.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.92 : 25,914.60 = 10,819.48 : x
  2. Step 2: Convert to fraction form
    18,776.92/25,914.60 = 10,819.48/x
  3. Step 3: Cross multiply
    18,776.92x = 25,914.60 × 10,819.48
  4. Step 4: Simplify right side
    18,776.92x = 280,382,496.41
  5. Step 5: Solve for x
    x = 280,382,496.41/18,776.92
  6. Step 6: Final answer
    x = 14,932.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.